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HORROCKS / PersistentPerl-2.22 / docs / file_cleanup.html 
<head><title>PersistentPerl - Temp File Cleanup</title></head>
<h1>Temp File Cleanup</h1>
When various items within the temp file should be cleaned up.
<p>
<table border=1>

<tr>
<th>
Name
</th>
<th>
Removed
</th>
</tr>

<tr>
<td>
Persistent temp file
</td>
<td>
When the file is closed and the group list is empty
</td>
</tr>

<tr>
<td>
Group
</td>
<td>
When a be or fe is removed, and both lists are empty.
</td>
</tr>

<tr>
<td>
Script list and Group Name
</td>
<td>
<ul>
    <li>When a group is removed</li>
    <li>When a group is invalidated

</ul>
</td>
</tr>

<tr>
<td>
BE Proc Slot
</td>
<td>
If the proc dies prematurely:
<ul>
    <li>If this BE is at the beginning of the group's BE list:
    <ul>
	<li>When the last BE in the previous group's BE list finishes one
	    perl run or is about to exit and checks it.
	<li>When the FE at the front of the fe_wait list in this group is
	    run or wakes up and checks it.
    </ul>
    <li>Otherwise:
    <ul>
	<li>When the BE previous to this one in the group's BE list finishes
	    one perl run or is about to exit and checks it.
    </ul>
</ul>
Otherwise:
<ul>
    <li>When the BE exits
</ul>
</td>
</tr>

<tr>
<td>
FE Proc Slot
</td>
<td>
If the proc dies prematurely:
<ul>
    <li>When a BE tries to wake it up in order to connect
    <li>When the FE after this one in the fe_wait list runs or wakes
        up and checks it.
</ul>
Otherwise:
<ul>
    <li>When it wakes up or is woken up and connects to an available BE.
</ul>
</td>
</tr>

</table>